F65510

Manufacturer Part NumberF65510
DescriptionControllers, Flat Panel VGA Controller
ManufacturerIntel Corporation
F65510 datasheet
 


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Page 91/154:

VIDEO INTERFACE REGISTER

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VIDEO INTERFACE REGISTER (XR28)
Read/Write at I/O Address 3B7h/3D7h
Index 28h
D7 D6 D5 D4 D3 D2 D1 D0
Reserved
Reserved
Shut Off Video
CPU Activity Indicator
256-Color Video Path
Reserved
8-Bit Video Pixel Panning
Tall Font Plane Enable
0
Reserved
1
Reserved
2
Shut Off Video
This bit is effective in all flat panel modes
during horizontal / vertical blank time. This
bit should be set properly when using FP
displays which look at video signals during
blank time. It has no effect on displays that
ignore video signals during blank time. This
bit is also ignored when the screen is
blanked (see XR2B for conditions when the
screen is blanked).
0 When the screen is not blanked, video
is forced to the border / overscan color
(AR11) during blank time (default on
Reset)
1 When the screen is not blanked, video
is forced to default video (XR2B)
during blank time.
Note: In flat panel mode, video is forced to
the border / overscan color (AR11)
or to default video (XR2B) before
the internal palette and before the
FRC logic.
3
CPU Activity Indicator
This bit controls the enabling of CPU
activity indicator or ERMEN/ functionality
on pin 49 (F65510) or pin 47 (T65510).
0 CPU Activity indicator is enabled on
pin 49 (F65510) or pin 47 (T65510)
(default).
1 ERMEN/ functionality is enabled on
pin 49 (F65510) or pin 47 (T65510).
Revision 0.7
4
256-Color Video Path
This bit is effective for all flat panel packed
pixel (256-color) Modes.
0 4-bit video data path (default on reset)
1 8-bit video data path (horizontal pixel
panning is controlled by bit-6)
Note: GR05 bit-5 must be 0 if this bit is set
5
Reserved (Must be Programmed to 0)
6
8-Bit Video Pixel Panning
This bit is effective for flat panel operation
when the 8-bit video data path is selected
(XR28 bit-4 = 1).
0 AR13 bits 2-1 are used to control
pixel panning (default on Reset)
1 AR13 bits 2-0 are used to control
pixel panning
7
Tall Font Plane Enable
This bit is used to select the plane used to
store tall fonts in text modes.
0 Tall Fonts are stored in plane 3
(default)
1 Tall Fonts are stored in plane 2
87
Extension Registers
Preliminary 65510